Hi,

I managed to improve the performance of the definition a little.

You don't need to input all the vertices of the mesh into the rigid body component unless you are using them for something else - so removing these speeds things up a bit.

Also shown is a simpler way of setting the collisions using the cross-reference component.

I tweaked the weightings a bit to try and improve the collision handling, but it is still a bit twitchy.

Collisions between complex concave geometry like this is tricky.

An alternative approach I think might work better here is to make use of the pipe-like geometry and use the line-line collisions instead. I'll make an example of this...

Okay, here it is with just collision between line segments. It does seem to work much better than treating them as meshes.